The three most abundant gases in our atmosphere are nitrogen, oxygen, and argon
Indicate whether the statement is true or false
TRUE
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Green light emitted by excited mercury vapor corresponds to an energy transition in the mercury atom. A more energetic transition might emit
A) red light. B) blue light. C) white light. D) any of these
The ________ Belt bodies orbit beyond Neptune, but like the planets stay close to the ecliptic plane and in fairly circular orbits
Fill in the blank(s) with correct word
The disintegration energy for gamma decay of a nucleus is typically on the order of 10-100 keV and can even be on the order of MeV. Which of the following statements best describes why the energies are so much larger than from atoms?
The fact that nearly all galaxies are moving away from us, with more distant ones moving faster, helped us to conclude that:
a. The universe is expanding. b. Galaxies repel each other like magnets. c. Our galaxy lies near the center of the universe.